Home / 1,389,930.54-2,086,244.00-670,778.42

Finding the Fourth Proportional to 1,389,930.54, 2,086,244.00 and 670,778.42

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Solution

The fourth proportional to 1,389,930.54, 2,086,244.00 and 670,778.42 is: 1,006,818.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,930.54 : 2,086,244.00 = 670,778.42 : x
  2. Step 2: Convert to fraction form
    1,389,930.54/2,086,244.00 = 670,778.42/x
  3. Step 3: Cross multiply
    1,389,930.54x = 2,086,244.00 × 670,778.42
  4. Step 4: Simplify right side
    1,389,930.54x = 1,399,407,442,784.79
  5. Step 5: Solve for x
    x = 1,399,407,442,784.79/1,389,930.54
  6. Step 6: Final answer
    x = 1,006,818.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.